Terminal insulation cover



Filed Jan. 28, 1926 me/nto@ JOHN /Pousa fltoz Mago Patented Mar. 12, 1929.

UNITED STATES PATENT OFFICE.

JOHN H. ROUSSE, 0F

SAN FRANCISCO, CALIFORNIA, ASSIGNOR T0' R-K MANUFACTUR-v ING COMPANY, OF SAN FRANCISCO; CALIFORNIA, A4 COPARTNERSHIP CONSISTING OF JOHN-H. ROUSE AND W. FREDERIC KAHN. I

TERMINAL INSULATION covnn.

Application led January 28, 1926. Serial No. 84,459.

This invent-ion relates to an article of manufacture employed at the terminal portions of electrical conductors.

Vhen insulation is stripped from a portion of an electrical conductor to expose the end thereof for connection to apparatus, the cut end of the remaining insulation is frequently left with threads hanging therefrom. This condition of the terminal portion of the re mainin insulation is untidy. Furthermore unraveng of the insulation may ensue if the end of the insulation is not bound up. Tape may be employed to bind up the end of the insulation, but the application of tape is a slow process. Moreover tape does not have 'a very neat appearance.

It is therefore an object of my invention to provide an article of the character mentioned which may be very quickly applied and which will be very neat in appearance.

A further object of my invention is the 'provision of a device -of the character nientioned which will tensionally hold itself 1n position. N y

With the foregoing objects in view, together with such other objects and advantages as may. subsequently appear, this invention resides in the'construction and arrangement of parts hereinafter described and claimed, and illustrated in the accompanying drawings, in which:

Figure 1 is a view of a terminal portion of a conductor showing insulation on a portion of the conductor, insulation being. in longitudinal section, the view also showing in longitudinal section one form of my invention as applied to the end portion of the insulation and to the conductor.

Figure 2 is a longitudinal section of the form of device shown in Figure 1.

' Figures 3 and 11 are longitudinal'sectionsi of modifications of the article of my inven- A tion.

Figure 5 is a plan view of the articlefshown in Figure 2 when the latter is rolled up.

Figure 6 is a section taken on line 6-6 of Figure 5, and

Figure 7 is a longitudinal section of still another modication of kthe article of my invention. c

In the drawings the numeral 10 indicates a cylindrical electrical conductor comprising a portion 11 surrounded by insulation 412 and a portion 13 from which the insulation has 'been stripped. A tubular member 14 encircles and engages with portions of the insulation 12,`

and the bare portion 13 of the conductor 10. The tubular member 14 is preferably made of insulating material, and such insulating material is preferably elastic, and may be iubber. The tubular member 14; is cylindrical and is constricted at the end 15, the opening 16 at that end being somewhatzsmaller than the diameter of the wire 10 which it engages. An annular bead 17 surrounds the opening 16, provided as a reinforcement. The other end of the member 14 is provided with a reinforcing annular bead 18. The main portion of the tubular member 14: is preferably of smaller internal diameter than the external diameter of the insulation 12. This being Lnormally true, and as stated, the diameter of the opening 16 being normally smaller than the diameter of the wire 10, the tube, which is elastic, is stretched somewhat in placing it in the position shown in Figure 1. When the tube is in position it will grip the insulation 12 and the wire l() and thereby tensionally holds itself in place. It will thus be readily appreciated that no adhesive is necessary to secure the tube to its associated elements.

The modiiication shown in Figure 3 is distinguished from the form shown in Figure 1 by the feature of the bead 17, which corresponds to the bead 17, shown in Figure 2, but is turned inwardly instead of being turned outwardly as the bead 17 is.

The modification shown in Figurell is Adiselongated constricted portion 18', the inter-4 nal diameter of which is the same as the diameter ofthe opening 16. v

The modification shown in Figure 7 isdisti-nguished from the form shown in Figure 2 in that the bead 17 is omitted while the end po'rtion\15L is made thicker than the lateral wall of the tube for reinforcing purposes.

vFigures 5 and 6 show the formof Figure 2 rolled upy preparatory to applying it to its intended position as shown in Figure l. It will be seen from Figures 5 and 6 that the tube is rolled up from the left side to the right, the roll being on the outside and being designated bythe numeral 2O in Figures 5 and 6.

In placing the device in position it is passed it comesjinto Contact with the end of 'the in sulation, when the'iol 20 is unioied and the tube assumes the Dositioii shown in Fiffure l. i i J. 2D

Vhiie l have described one embodiment of my invention, modifications thereof may be readily devised Without departing from the spirit of myinventon, and it is tobe understood that such modifications come within 'die scope of the appended Claim,

l daim :e

A eiminal insulation @over comprising'a flexible covering tubular in ei'oss section and having a thin wail for permitting the eevering te be rolled up periphei'aily, said member having' e 4reduced portion foi' engaging with the Wire and having a shoulder for Contacting with the end of. the Wire Cover, said shoulder limiting the rolling up of the tub-e.,

JeHN H. Reese. I 

